Clear Outside v1.0 - International Weather Forecasts For Astronomers

Friday 5

Waning Gibbous 98%

16:45

10:19

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 07:58, Set: 15:44, Transit: 11:51. Moon - Rise: 16:45, Set: 10:19. Civil Dark: 16:26 - 07:16. Nautical Dark: 17:10 - 06:32. Astro Dark: 17:52 - 05:50

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
99
100
100
100
100
100
100
100
100
100
100
100
100
100
95

Low Clouds (% Sky Obscured)

47
90
100
94
100
89
86
72
61
59
75
68
70
86
71
63
56
65
54
55
66
73
83
83

Medium Clouds (% Sky Obscured)

100
100
100
100
24
41
96
52
100
77
100
100
100
100
98
100
100
99
46
100
100
100
65
35

High Clouds (% Sky Obscured)

98
100
100
81
0
0
50
35
30
1
100
100
100
100
98
100
100
100
100
100
100
100
97
54

ISS Passover

Visibility (miles)

9
3
3
4
9
9
9
9
9
9
9
9
6
9
6
9
9
6
9
4
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Very Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
Very Light Rain
Very Light Rain
None
None
None
None
Very Light Rain
Light Rain
None
None
None
None
None
None
None
None
Light Rain
Very Light Rain

Precipitation Probability (%)

77
95
95
95
72
41
63
58
32
11
27
35
61
88
51
35
22
27
29
41
14
42
68
65

Precipitation Amount (mm)

0.3
1.5
1.4
1
0.3
0
0.3
0.3
0
0
0
0
0.2
0.7
0
0
0
0
0
0
0
0
0.4
0.3

Wind Speed/Direction (mph)

20
23
24
25
26
26
22
19
19
17
17
18
18
19
18
18
19
19
19
18
17
17
16
15

Chance of Frost

Temperature (°C)

7
7
6
6
6
7
8
9
9
9
9
9
9
9
9
9
10
10
10
10
10
11
10
10

Feels Like (°C)

1
-1
-1
-2
-2
-2
1
3
3
4
3
3
3
3
3
4
4
4
4
5
5
5
5
5

Dew Point (°C)

4
4
4
4
5
5
6
6
5
6
6
6
6
6
7
7
7
7
8
8
7
7
7
7

Relative Humidity (%)

79
84
84
86
88
87
91
82
76
81
84
82
84
84
90
88
82
85
87
84
80
78
80
82

Pressure (mb)

1000
998
997
995
994
992
991
991
991
991
990
990
990
990
990
991
991
991
992
992
993
993
994
994

Ozone (du)

295
294
295
297
299
299
296
296
297
298
297
298
296
292
290
287
285
285
285
284
284
284
284
286

Saturday 6

Waning Gibbous 93%

No Rise

11:03

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 07:59, Set: 15:44, Transit: 11:51. Moon - Rise: No Rise, Set: 11:03. Civil Dark: 16:25 - 07:17. Nautical Dark: 17:10 - 06:33. Astro Dark: 17:52 - 05:51

Total Clouds (% Sky Obscured)

95
83
68
75
58
80
100
99
85
96
97
100
90
98
96
100
99
100
100
100
100
100
100
100

Low Clouds (% Sky Obscured)

88
50
58
48
44
38
36
17
28
27
37
50
58
54
45
52
96
78
85
95
100
90
91
86

Medium Clouds (% Sky Obscured)

95
77
32
30
0
2
0
0
0
43
72
46
76
93
87
88
80
82
100
100
99
100
100
98

High Clouds (% Sky Obscured)

45
0
0
2
0
70
74
96
67
89
93
100
66
87
86
100
89
100
100
100
100
100
100
98

ISS Passover

Visibility (miles)

3
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
5
3
3
4

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain

Precipitation Probability (%)

64
30
6
8
10
3
4
1
1
0
0
0
0
0
4
25
24
31
36
65
95
95
95
95

Precipitation Amount (mm)

0.4
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0.3
0.9
1.2
1.3
0.9

Wind Speed/Direction (mph)

14
19
20
18
17
16
16
15
14
13
11
9
8
8
8
8
8
9
11
12
14
15
14
13

Chance of Frost

Temperature (°C)

9
10
10
10
10
9
9
9
9
8
8
7
7
7
7
7
7
8
9
9
10
10
10
11

Feels Like (°C)

5
4
4
5
5
5
5
5
4
4
3
3
3
4
4
4
4
5
5
5
6
6
6
7

Dew Point (°C)

8
8
7
7
7
7
7
7
7
6
5
5
5
5
6
6
6
7
8
9
9
10
10
10

Relative Humidity (%)

91
85
80
81
82
85
84
84
84
85
85
87
87
85
91
94
93
93
96
96
96
95
96
96

Pressure (mb)

995
995
997
998
999
1000
1000
1001
1002
1003
1003
1003
1003
1003
1003
1003
1003
1003
1002
1001
999
998
997
996

Ozone (du)

282
282
282
286
286
284
284
285
285
286
285
283
281
279
280
281
282
281
283
283
283
286
288
288

Sunday 7

Waning Gibbous 86%

18:13

11:31

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 OK
00 OK
01 OK
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:00, Set: 15:43, Transit: 11:52. Moon - Rise: 18:13, Set: 11:31. Civil Dark: 16:25 - 07:19. Nautical Dark: 17:10 - 06:34. Astro Dark: 17:52 - 05:52

Total Clouds (% Sky Obscured)

100
100
100
88
78
47
22
24
40
62
63
74
71
72
67
63
60
61
62
75
87
100
100
100

Low Clouds (% Sky Obscured)

93
81
60
72
66
33
22
24
40
27
25
46
43
45
50
52
60
57
57
59
59
60
59
60

Medium Clouds (% Sky Obscured)

100
81
30
15
0
0
0
0
0
23
5
0
3
0
0
0
3
60
60
73
87
91
38
45

High Clouds (% Sky Obscured)

91
100
62
65
12
15
0
0
0
0
63
60
60
60
45
40
40
30
25
22
20
19
45
71

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
7
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

85
67
21
21
6
5
0
0
0
0
0
0
0
0
0
0
0
0
9
23
47
48
40
24

Precipitation Amount (mm)

0.5
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
16
18
19
21
21
19
16
15
15
15
16
16
16
16
15
16
15
16
17
16
14
13
12

Chance of Frost

Temperature (°C)

12
12
13
13
13
13
11
10
10
10
9
9
9
9
9
9
9
11
11
12
12
12
11
11

Feels Like (°C)

8
8
7
8
6
5
5
6
5
5
6
5
5
5
5
4
5
6
7
7
8
8
8
8

Dew Point (°C)

11
11
11
11
10
8
7
6
6
6
7
7
7
7
7
7
8
8
8
9
9
9
9
10

Relative Humidity (%)

92
92
90
87
80
75
77
76
78
78
84
84
84
87
87
87
90
85
80
83
83
86
86
88

Pressure (mb)

995
995
995
995
996
998
999
1000
1002
1003
1003
1003
1003
1004
1004
1005
1006
1006
1007
1007
1007
1007
1007
1007

Ozone (du)

289
293
297
299
307
312
317
319
317
312
311
312
312
313
319
325
327
331
335
341
344
344
339
338

Monday 8

Waning Gibbous 77%

19:44

11:49

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:01, Set: 15:43, Transit: 11:52. Moon - Rise: 19:44, Set: 11:49. Civil Dark: 16:25 - 07:20. Nautical Dark: 17:10 - 06:35. Astro Dark: 17:52 - 05:53

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99

Low Clouds (% Sky Obscured)

59
57
53
43
52
59
60
63
68
77
78
79
80
82
85
88
82
76
70
79
89
98
98
98

Medium Clouds (% Sky Obscured)

3
41
60
65
77
88
100
100
100
100
72
100
100
100
79
99
100
100
100
88
82
73
72
69

High Clouds (% Sky Obscured)

100
100
100
100
100
100
100
100
100
100
100
100
100
100
99
99
99
99
100
100
100
100
80
62

ISS Passover

Visibility (miles)

9
9
9
9
9
5
4
3
4
8
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
Very Light Rain
Very Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None

Precipitation Probability (%)

6
7
7
3
26
55
68
83
84
91
94
95
95
95
93
88
95
95
95
85
73
56
49
49

Precipitation Amount (mm)

0
0
0
0
0
0.2
0.3
0.4
0.4
0.6
0.6
0.7
0.8
0.7
0.6
0.5
0.6
0.8
0.9
0.5
0.3
0
0
0

Wind Speed/Direction (mph)

12
12
11
11
12
12
12
12
13
14
15
17
18
19
20
21
21
22
21
20
20
20
20
19

Chance of Frost

Temperature (°C)

11
11
11
11
10
11
11
11
11
11
11
12
12
12
13
13
13
13
13
13
14
14
14
14

Feels Like (°C)

8
7
8
8
7
8
8
8
7
7
7
6
7
8
8
8
9
9
10
9
10
10
10
10

Dew Point (°C)

10
9
9
9
9
10
10
11
10
10
10
10
10
11
12
11
12
12
12
12
12
12
12
12

Relative Humidity (%)

90
86
88
91
93
95
96
98
95
93
93
87
89
92
92
90
92
90
90
90
90
92
89
90

Pressure (mb)

1007
1008
1008
1008
1008
1007
1007
1006
1005
1005
1004
1002
1001
1001
1000
1000
999
999
999
999
998
998
998
998

Ozone (du)

336
333
334
334
333
330
325
320
319
314
309
306
300
298
298
297
295
293
292
292
294
293
291
287

Tuesday 9

Waning Gibbous 67%

21:11

12:02

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:02, Set: 15:43, Transit: 11:53. Moon - Rise: 21:11, Set: 12:02. Civil Dark: 16:25 - 07:21. Nautical Dark: 17:09 - 06:36. Astro Dark: 17:51 - 05:54

Total Clouds (% Sky Obscured)

98
95
92
89
90
90
90
93
96
100
83
65
48
47
46
45
54
62
72
66
57
47
53
59

Low Clouds (% Sky Obscured)

98
91
85
79
67
56
45
44
44
44
45
47
48
47
46
45
54
59
64
58
50
45
47
45

Medium Clouds (% Sky Obscured)

65
61
51
52
59
69
82
86
90
95
79
63
48
38
30
14
21
29
36
29
25
19
30
46

High Clouds (% Sky Obscured)

45
44
39
20
39
30
20
43
70
100
69
38
2
1
6
10
9
12
17
11
6
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

36
14
17
12
23
10
3
3
1
0
0
0
0
0
0
0
0
0
0
5
3
0
7
8

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

18
18
17
16
15
15
14
13
13
13
13
14
13
13
13
13
12
14
15
17
17
17
16
16

Chance of Frost

Temperature (°C)

14
13
13
13
13
12
12
11
11
10
10
10
9
9
9
9
9
9
10
11
10
10
10
10

Feels Like (°C)

10
11
10
10
10
9
9
9
8
8
8
8
7
7
6
6
6
5
6
6
7
7
7
7

Dew Point (°C)

13
12
11
11
11
10
10
10
9
8
7
7
8
8
8
7
7
8
8
8
7
7
7
7

Relative Humidity (%)

93
90
87
86
86
89
88
91
87
85
84
85
88
90
90
90
90
88
85
84
81
81
80
81

Pressure (mb)

998
998
999
999
1000
1000
1001
1002
1003
1003
1004
1004
1005
1005
1006
1006
1007
1007
1008
1008
1008
1008
1008
1009

Ozone (du)

285
284
285
285
284
285
290
291
292
293
294
296
297
299
302
305
309
312
316
319
321
323
325
329

Wednesday 10

Waning Gibbous 57%

22:33

12:13

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 OK
23 OK
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad
09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad

Sun - Rise: 08:03, Set: 15:43, Transit: 11:53. Moon - Rise: 22:33, Set: 12:13. Civil Dark: 16:25 - 07:22. Nautical Dark: 17:09 - 06:37. Astro Dark: 17:51 - 05:55

Total Clouds (% Sky Obscured)

64
61
59
60
53
42
38
48
62
81
79
70
69
76
83
90
86
79
72
76
80
84
80
75

Low Clouds (% Sky Obscured)

45
51
54
54
52
42
38
48
47
44
41
36
34
31
27
25
26
31
33
47
63
75
64
55

Medium Clouds (% Sky Obscured)

64
52
27
1
1
1
1
17
32
48
51
51
54
41
37
24
36
45
54
51
46
45
44
62

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
4
9
17
13
9
6
30
56
82
78
74
70
65
65
45
50
51

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

3
1
1
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
0
0
2
0
0
1

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
15
15
15
16
15
14
14
13
13
13
13
13
13
13
14
15
15
15
15
15
16
16
16

Chance of Frost

Temperature (°C)

9
9
8
8
8
8
7
7
7
7
7
7
7
7
7
7
7
8
9
9
10
10
10
9

Feels Like (°C)

7
7
4
4
4
4
4
4
3
4
4
4
4
4
3
4
4
3
4
4
6
6
5
5

Dew Point (°C)

6
6
6
5
6
5
5
5
5
5
5
5
6
6
6
6
6
6
7
7
8
8
8
7

Relative Humidity (%)

81
82
82
82
85
84
84
84
84
85
85
88
91
94
93
91
91
88
88
87
87
87
87
87

Pressure (mb)

1010
1010
1011
1011
1012
1013
1013
1014
1015
1015
1015
1016
1016
1016
1016
1016
1016
1016
1016
1016
1015
1015
1014
1013

Ozone (du)

332
336
336
336
336
329
322
315
313
312
311
309
307
305
305
305
304
304
303
302
303
303
304
305

Thursday 11

Third Quarter 46%

23:51

12:22

17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad

Sun - Rise: 08:04, Set: 15:43, Transit: 11:54. Moon - Rise: 23:51, Set: 12:22. Civil Dark: 16:25 - 07:22. Nautical Dark: 17:09 - 06:38. Astro Dark: 17:52 - 05:56

Total Clouds (% Sky Obscured)

73
76
78
79
84
87
91
88
89
87
89
91
89

Low Clouds (% Sky Obscured)

44
50
57
63
70
73
76
66
59
49
56
65
75

Medium Clouds (% Sky Obscured)

69
55
41
24
17
9
0
0
0
0
9
14
21

High Clouds (% Sky Obscured)

56
53
55
52
50
63
66
66
65
60
60
45
25

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
0
0
0
0
5
8
6

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

16
16
16
17
18
18
18
18
19
20
21
20
21

Chance of Frost

Temperature (°C)

9
8
8
8
8
8
7
7
7
7
7
8
8

Feels Like (°C)

5
5
4
4
3
3
3
3
2
1
1
1
1

Dew Point (°C)

7
7
7
7
6
6
5
5
5
5
5
5
6

Relative Humidity (%)

88
90
90
90
90
88
84
82
82
82
82
81
82

Pressure (mb)

1013
1012
1012
1011
1011
1010
1009
1008
1007
1006
1005
1005
1004

Ozone (du)

305
306
306
306
306
308
310
311
312
313
313
315
316

Forecast for Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 05/12/25 17:16:17. Forecast: 05/12/25 to 11/12/25. Timezone: UTC+0.00